MANAGEMENT OPTIONS:Handpulling: Handpulling, especially with the aid of a shovel, can be a very effective method of control on patches of both rosettes and flowering houndstongue plants at any time during the growing season. Pulled plants that are in or past the flowering stage should be placed in plastic bags and removed from the site to prevent seed dispersal.Mowing: Can be a very effective method of control for bolting individuals if done before flower, but will not effect rosettes of houndstongue.Biological Control: N/AGrazing: Grazing is not a recommended method of control for houndstongue due to it containing high levels of pyrrolizidine alkaloids that are poisonous to livestock. Grazing will only increase pressure on competitive, desirable species.Herbicide: The use of herbicides on houndstongue should focus on individuals that are in the rosette or bolting stages, as flowering individuals will already die at the end of the season (houndstongue is a biennial). The following herbicides have been labelled for control of houndstongue. Always consult product labels and read them carefully to ensure correct species/land management usage and chemical application.